Pandolfini's Mailbag: Speed Chess -- The Good

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Topic for May/June: The Endgame
(Please start submitting questions concerning the above topic for the next column. Questions different from the above theme should be submitted to other Chess.com departments.)
The Good and the Bad of Speed Chess?
It turns out a number of this month’s questions overlap or touch upon pretty much the same concerns. So I thought I’d conflate the similar queries to a big general question and try to answer that up front.
Qu...